Josef denk



(No Model.)

J. DENK.

OOPFEE MAKING MACHINE.

- No. 555,500. Patnted Mar. 3,1896.

WTTNESSES:

ATTORNEYS.

UNITEn STATES PATENT OFFICE,

JOSEF DENK, OF VIENNA, AUSTRIA-HUNGARY.

COFFEE-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 555,500, dated March 3,1896.

A li ti fil d June 1, 1895. Serial No. 551,417. (No model.) Patented inAustria April 23, 1894,1lo.62,'768,andi11 Hungary April 23, 1894, No.95,372.

To aZZ whom it may concern.-

Be it known that I, JOSEF DENK, a subject of the Emperor ofAustria-Hungary, residing in Vienna, Austria-Hungary, have inventedcertain new and useful Improvements in Coffee-Making Machines, (patentedin Austria, No. 62,768, and in Hungary, No. 95,372,) and I do herebydeclare the following to be a full, clear, and exact description ofthe-invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters of reference marked Ehereon, whichform a part of this specifica- The object of my invention is to providea coffee-making machine of simple,-strong and durable construction,easily handled and reliable in operation.

The invention consists in the improved coifee-making machine, in acertain flexible locking mechanism and in the combination andarrangements of the various parts thereof, substantially as will behereinafter more fully described and finally embodied in the clauses ofthe claim.

Referring to the accompanying drawings, in which like letters ofreference indicate corresponding parts in each of the several views,Figure 1 is a central section through my improved device; Fig. 2, anenlarged detail view of a certain coffee-receptacle, and Fig. 3 anenlarged top plan view of a certain seat for the said coffee-receptaclehereinafter more fully described.

In said drawings, A represents a pot, with lid B provided with anair-hole B. Said pot is removably suspended in a yoke or frame 0 securedto base D. In a central recess of said base is arranged the heatingdevice E with handle F, all as in ordinary coffee-making machines.

The pot A is divided by the horizontallyarranged partition-plate 1) intoan upper and lower receptacle a and c, (the upper one being providednear its bottom with an outlet-cock Ct',) but which are in communicationwith each other by means hereinafter described. The partition I) isprovided with a centrally-arranged and upwardly-extending cylinder orcone 1), provided at its top with a flange 6 having a series of two ormore recesses b as clearly shown in Fig. 3 of the drawings. The flange bof said central cylinder or cone forms the seat for thecoffee-receptacle d, provided at its under side with an annular shoulder(1 adapted to fit into the top of said cylinder or cone 1). To the sideor to the under side of the coffee-receptacle d are secured in anydesired manner a series of substantially rectangular springs adapted topass with their horizontally-arranged portion through the recesses b ofthe flange b and after being turned with the receptacle 61 out ofalignment with said recesses, to bear against the under side of saidflange and thus prevent the entire withdrawal of the receptacle d fromthe cylinder or cone Z).

In the center of the bottom of the receptacle cl is secured a tube fextending downward to about the bottom of the lower receptacle 0, and isprovided with a series of perforations f opening into the receptacle d.

The upper portion of the tube f terminates into a conical-shaped stemadapted to receive the neck of the hooded sieve h, covering the openingsf in tube f and also a portion of the bottom of the said receptacle. Thetop portion of the stem is threaded, as at g, and adapted to receive anut m, secured in the center of the lid 2', which latter is providedwith a series of small preforations and fits closely on the receptaclecl.

A strainer 70, made of flannel, lint or any other suitable material, isplaced between the lid e' and the receptacle d, as shown in Fig. 1.

In operation the lower receptacle is filled with water, ground coffeeplaced into the receptacle d,the strainer 71; and the perforated lidplaced in position. The receptacle d is then placed on its seat-that is,on the flange b of cone band is then turned to one side until therectangular springs e engage the under side of said flange. The pot A isthen covered by the lid B and the heating device E started. The waterwill soon begin to boil and by the pressure of the generated steam willbe forced through the tube f and its openings f (and also sieve h) intothe receptacle d,where it is thoroughly mixed and infused with theground coffee, which infusion is forced by the water following throughthe strainer k and perforated lid into the upper receptacle, a, of thepot, from where it can be discharged through cock a" into glasses, cups,the.

The above-described coi'tee-making machine has, on account of itsllexible springlocking mechanism, a great advantage over all othercoffee-making machines, as an explosion or bursting of the pot isimpossible. Should the pressure in the pot get too great, the receptacle(1 is lifted 011 its seat by said excessive pressure snflieientlyfar toallow the surplus of steam to escape, and is then. by the action of theangular springs returned to its normal position.

llaving thus d scribed my iuventioii,what I claim as new, and desire tosecure by Letters Patent, is

1. In a collTec-making machine, a pot, a partition dividing said potinto an upper and lower receptacle, a central cone or cylinder risingfrom said partition and provided at its top with an annular flangehaving a series of recesses, a coffee-receptacle provided at its underside with an annular shoulder to tit on and into the top of said cone, aseries of angular springs depending from said receptacle and adapted tobear with their horizontallyarranged portions on the under side of saidannular flange and thus to form a flexible locking mechanism, saidannular flange, a tube in the bottom of the coffee-receptacle, andextending downward into the lower receptacle of the pot and providedwith a series of perforations opening into the said coffeereceptacle, astrainer on said receptacle and a perforated lid on said strainer, allsaid parts substantially its and for the nn-poses described.

2. In a eollfec-n'ialcing machine, a pot, a partition dividing said potinto an upper and lower receptacle, a central cone or cylinder risingfrom said partition and provided at its top with an annular flangehaving a series of recesses, a coffee-receptacle provided at itsunderside with an annular shoulder adapted to lit into the top of saidcone, a tube in the bottom of the coilfce-receptacle and extendingdownward into the lower receptacle of the pot and. provided with aseries of perforations opening into said. coilee-rece 'ltacle, acone-shaped stem at the upper end of said tube, a perforated hoodedsieve provided with. acrmieal-slnqied neck arranged on said stem andcovering the perforations in the tube and a portion of the bottom of.the receptacle, a strainer on said rcee niacle, a lid on said strainer,and a series of rectangular springs depemling from the receptacle and:nlapted to engage with their liorizontally-bent portions the under sideof the flange of the cen tral cone and thus to term a flexible locking1noehanisn1,all said parts,sul )stantiallyz s and for the purposesdescribed.

In testimony that I claim the torcgoingl have hereunto set my hand this(5th day of May, 1895.

\Vitnesses:

I). ll. Mason, osnr Znnn'rmn.

